Effects of electric field and light polarization on the electromagnetically induced transparency in an impurity doped quantum ring

被引：22

作者：

Bejan, D. ^{[1
]}

Stan, C. ^{[2
]}

Niculescu, E. C. ^{[2
]}

机构：

[1] Univ Bucharest, Fac Phys, POB MG 11,Str Atomistilor 405, Bucharest 077125, Romania

[2] Politeh Univ Bucharest, Dept Phys, Bucharest, Romania

来源：

OPTICAL MATERIALS | 2018年 / 75卷

关键词：

Quantum ring; Donor impurity; Electromagnetically induced transparency; Electric field; Susceptibility; Polarization; NONLINEAR-OPTICAL RESPONSES; SODIUM ATOMIC-BEAM; POPULATION-INVERSION; MAGNETIC-FIELD; LASER OSCILLATION; REFRACTIVE-INDEX; ABSORPTION; WELL; DOT; SYSTEM;

D O I：

10.1016/j.optmat.2017.11.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We theoretically investigated the effects of the impurity position, in-plane electric field, intensity and polarization of the probe and control lasers on the electromagnetically induced transparency (EIT) in GaAs/GaAIAs disc shaped quantum ring. Our study reveals that, depending on the impurity position, the quantum system presents two specific configurations for the EIT occurrence even in the absence of the external electric field, i.e. ladder-configuration or V-configuration, and changes the configuration from ladder to V for specific electric field values. The polarization of the probe and control lasers plays a crucial role in obtaining a good transparency. The electric field controls the red-shift (blue-shift) of the transparency window and modifies its width. The system exhibits birefringence for the probe light in a limited interval of electric field values. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：827 / 840

页数：14

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